Taxon Details

Lomatium grayi

Gray's lomatium

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Taxon Summary:

Lomatium grayi, commonly known as Gray's lomatium, is a perennial herb in the Apiaceae that is found in California and elsewhere. It occurs within Great Basin scrub, and Pinyon and juniper woodland, growing at elevations from 1390 to 1415 meters. Lomatium grayi is ranked 2B.3, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Not very threatened in California.

Classification

Scientific Name: Lomatium grayi (Coult. & Rose) Coult. & Rose
Common Name: Gray's lomatium
Family:	Apiaceae
Element Code:	PDAPI1B0Q0
USDA Plants Symbol:	LOGR
Synonyms/Other Names:
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	2B.3
Fed List:	None
State List:	None
Global Rank:	G5
State Rank:	S1S2
Other Status:
CRPR Changes:
Add Date:	2001-01-01
Date Edited:	2025-07-01

Ecology and Life History

Lifeform: perennial herb

Blooming Period: Apr-Jun

Elevation:
1390 - 1415 meters
4560 - 4645 feet

General Habitats:

Great Basin scrub
Pinyon and juniper woodland

Microhabitat Details:

Microhabitat:

Notes

Notes: Known in CA only from near Lake City and Surprise Valley.
Threats:
Taxonomy: Not in The Jepson Manual.

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	1
	Total EOs	% of EOs
EOs with Threat Listed:	1	25 %
Road/trail construction/maint.	1	25%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					4
A	B	C	D	X	U
2	0	0	0	0	2

Occurrence Status:
Historical >20 Years	4
Recent <=20 Years	0

Presence:
Presumed Extant	4
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA), Colorado (CO), Idaho (ID), Nevada (NV), New Mexico (NM), Oregon (OR), Utah (UT), Washington (WA), Wyoming (WY)

California Counties and Islands: Name (Code)
Modoc (MOD), Placer (PLA)

Quads: Name (Quad Code)
Cedarville (4112052), Lake City (4112062), Leonards Hot Springs (4112051), Truckee (3912032)

Notes:

Definitions of codes following a county and/or quad:
*		Presumed extirpated
(?)		Occurrence confirmed, but possibly extirpated
Quad and county data is imported from the CNDDB. Species may be present in other areas where conditions are favorable. These data should NOT be substituted for pre-project review or for on-site surveys.

Regional Map

Map

Presumed Extant

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Original Description:	Botanical Gazette 13:209 (1888)
Revised Nomenclature:	Contributions from the U.S. National Herbarium 7:229 (1900)
Species Account:	Lomatium grayi profile for potential Species of Conservation Concern evaluation (2018)

CNPS Rare Plant Inventory